ORION TWP., MI – An explosion that injured one revealed evidence of a butane honey oil lab in an Orion Township basement, the Oakland County Sheriff’s Office reported.

A 911 caller reported about 3:20 p.m. Saturday her boyfriend used the kitchen stove to light a cigarette and the house on Gregory Road, northwest of Auburn Hills, burst into flames.

The five occupants escaped, but the boyfriend had burns to his face and lower arms and was taken to Detroit Receiving Hospital for treatment, the sheriff’s office reported.

Fire investigators found what appeared to be a lab used to make the honey oil or BHO, a potent marijuana concentrate similar in appearance to butter or honey. The labs are highly dangerous facilities used to extract THC, the active ingredient in marijuana, by using butane, according to the U.S. Drug Enforcement Administration.

With it, was “a large amount of marijuana shake,” the sheriff’s office reported.